package wyp.library.tools;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import Decoder.BASE64Encoder;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;

public class PictureUtil {

	/**
	 * 把bitmap转换成String
	 * 
	 * @param filePath
	 * @return
	 */
	public static String bitmapToString(String filePath) {

		Bitmap bm = getSmallBitmap(filePath);

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		bm.compress(Bitmap.CompressFormat.JPEG, 30, baos);
		byte[] b = baos.toByteArray();

//		try {
//			saveBitmapToFile(bm, "nsfw_picture_" + new Date().getTime());
//		} catch (IOException e) {
//		}
		// return Base64.encodeToString(b, Base64.DEFAULT);
		return new BASE64Encoder().encodeBuffer(b);

	}

	/**
	 * 保存图片 到sd卡
	 * @param bitmap
	 * @param _file
	 * @throws IOException
	 */
	public static void saveBitmapToFile(Bitmap bitmap, String _file) throws IOException {
		BufferedOutputStream os = null;
		try {
			File file = new File(_file);
//			 String _filePath = _file.replace(File.separatorChar + file.getName(), "");
			int end = _file.lastIndexOf(File.separator);
			String _filePath = _file;
			if (end>0 ) {
				_filePath = _file.substring(0, end);
			}
			File filePath = new File(_filePath);
			if (!filePath.exists()) {
				filePath.mkdirs();
			}
			file.createNewFile();
			os = new BufferedOutputStream(new FileOutputStream(file));
			bitmap.compress(Bitmap.CompressFormat.PNG, 30, os);
		} finally {
			if (os != null) {
				try {
					os.close();
				} catch (IOException e) {
				}
			}
		}
	}

	/**
	 * 计算图片的缩放值
	 * 
	 * @param options
	 * @param reqWidth
	 * @param reqHeight
	 * @return
	 */
	public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
		// Raw height and width of image
		final int height = options.outHeight;
		final int width = options.outWidth;
		int inSampleSize = 1;

		if (height > reqHeight || width > reqWidth) {

			// Calculate ratios of height and width to requested height and
			// width
			final int heightRatio = Math.round((float) height / (float) reqHeight);
			final int widthRatio = Math.round((float) width / (float) reqWidth);

			// Choose the smallest ratio as inSampleSize value, this will
			// guarantee
			// a final image with both dimensions larger than or equal to the
			// requested height and width.
			inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
		}

		return inSampleSize;
	}

	public static Bitmap getSmallBitmap(String filePath, int reqWidth, int reqHeight) {
		BitmapFactory.Options options = new BitmapFactory.Options();
		options.inJustDecodeBounds = true;

		BitmapFactory.decodeFile(filePath, options);

		// Calculate inSampleSize
		options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

		// Decode bitmap with inSampleSize set
		options.inJustDecodeBounds = false;

		return BitmapFactory.decodeFile(filePath, options);
	}

	/**
	 * 根据路径获得突破并压缩返回bitmap用于显示
	 * 
	 * @param imagesrc
	 * @return
	 */
	public static Bitmap getSmallBitmap(String filePath) {
		return getSmallBitmap(filePath, 480, 800);
	}

	/**
	 * 根据路径删除图片
	 * 
	 * @param path
	 */
	public static void deleteTempFile(String path) {
		File file = new File(path);
		if (file.exists()) {
			file.delete();
		}
	}

	/**
	 * 添加到图库
	 */
	public static void galleryAddPic(Context context, String path) {
		Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
		File f = new File(path);
		Uri contentUri = Uri.fromFile(f);
		mediaScanIntent.setData(contentUri);
		context.sendBroadcast(mediaScanIntent);
	}

	/**
	 * 获取保存图片的目录
	 * 
	 * @return
	 */
	public static File getAlbumDir() {
		File dir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), getAlbumName());
		if (!dir.exists()) {
			dir.mkdirs();
		}
		return dir;
	}

	/**
	 * 获取保存 隐患检查的图片文件夹名称
	 * 
	 * @return
	 */
	public static String getAlbumName() {
		return "sheguantong";
	}
}
